Gas-engine.



J. F. BUTLER & H. F. McCHAY.

GAS, ENGINE.

APPLICATION HLED FEB-,16 1914.

1 16 571 Patented Jan. 4, 1916.

2 SHEETS-SHEET I.

I. F. BUTLER & H. F. McCRAY.

GAS ENGINE.v

APPLICATION FILED FEB. 1.6, 1914.

1,166,577, v Patented Jan. 4, 1916.

2 SHEETS-SHEET 2.

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COLUMBIA PLANDURAPH 30-, WASHINGTON, D. C.

. To all whom it may concern .HARRY F. MCCRAY, citizens States, residingat Reno,

501m 1*. BUTLER AND HARRY F. meonAYQor'mnvo', NEVADA, assisnons or oun-THIRD TO WILLIAM A. MASSEY, on mac, NEVADA. l

' GAS-ENGINE.

F. BUTLER and of the United county of Vashoe, State of Nevada, haveinvented certain new and useful Improvements in Gas-Engines, of whichthe following is a full, clear, and exact specification. 7

Our invention relates to explosion or internal combustion engines of thetwo-cycle type in which an explosion occurs every time the piston startsupon its forward stroke Be it known that we, J OI-IN as distinguished,for instance, from engines gases and of a new charge require explosionsof lesser of the four-cycle variety where the arrangements for thescavenging of the exhaust the introductlon and compression frequency. 7One object of our present invention s to simplify the mechanism forsupplying the charges to a two-cylinder engine by the use 7 of a storagetank for the mixed gases, and a common slide valve for placing thepumping section'of one of the cylinders in com-- munication with thecarbureter while the pumping section of the other cylinder is incommunication with said storage tank, the

- latter being in direct communication; with the interiors of thecombustion section of specification,

both cylinders when the'pistons open their respective ports.

Further ob ects will become apparent as U the description proceeds.

v The invention will scribed in connection'with the accompanyingdrawings, which constitute a partof this and then more specificallypointed out description.

In the accompanying the same reference characters are used to indicatecorresponding parts throughout the several views: Figure 1 tional Viewof atwo-cylinder engine icon structed in accordance with our invention,

one of the pistons being illustrated'as at the end of its forward or.down stroke, and the other piston as atthe endof its return-or upstroke, and the slotted seat" for the single or common valve beingindicated'in broken lines in the position it would occupy in a frontelevation; Fig. 2 is a vertical section the storage'tank, the valve, the

pipe leading from. the carbureter, and the Specification of LettersPatent.

be first hereinafter de' in the claimatthe end of the drawings, whereinis a vertical sec-..

each, as

' one column and through one of the ports leading from the valve to thepumping section of thecylinder and the storage tank and from'the storagetank to the combustion section of the cylinder; Fig. 3 is a brokensectional view of the upper part of one cylinder similar to that shownin Fig.2 except that itis provided with a water cooled jacket instead ofan air cooled jacket as illustrated in Figs. 1 andQ, Fig. 4 isadiagrammatic view of the valve seat; Fig. 5 is an inner face view of thevalve drawn to the and Figs. 6 and 7 are sections of drical portions 0andd fitted to slide in the combustion sections a and b of thecylinders,

and said pistons also have enlarged heads 0 and d fitted to slide in thepumpingsections a and Z) of the cylinders. The pistons are actuated bypitmen E and F connected to oppositely extending cranks of the drivingis at the end of its upwardstroke when the other ,one is at; the end ofits downward stroke, and the force of the eXplosion whi-ch drives thefirst piston downward will carry the second piston upward. H I v Thelower or pumping sections of both cylinders'have ports 1 and 2 in thevalve seat H. which alsohas four-other ports or slots, two of them, 3and 4,.leading to the carbureter(not shown), and the other two, 5 and 6,leading-to 2. Said tank communicates with the combustion sections ofthecylinders by passages L in which screens or grids of mesh material-.are placed to divide the gas into small particles as it enters insureapropermixture vandignition. The

the cylinders in order to ports or slots in the valve seat H. arearranged in two' vertical ,columns of three each, v and three horizontalrows of three illustrated in' Figs. 1 and 4:. The

two middle, slots lead to the pumping sections of the cylinders. Theupperlslot, of the'lower;slot of the other column lead to the storagetank, f while the remaining two ports lead to the ca'rbureter. The valveN is adapted to be reciprocated by means. of a cam rod, 0, and isdesigned,

Patented Jan. 4,1916. Application filed February 16, 1914. Serial no.818,948,

shaft Gr. Consequently one ofthe pistons the storage tank K, Fig.

to close either the two upper or the two lower ports in the valve seatwhile placing the two lower or upper ports in each column incommunication with each other. In other words, when the valve is in itslowered position, as indicated by the dotted lines in Fig. 2, the port1, Figs. 1 and a, leading to the pumping section of one cylinder, is incommunication with port 3, leading to the carburetor, while port 2leading to the pumping section of the other cylinder, is incommunication with port 6 leading to the storage tank, and the ports 5and 4 are closed. On the other hand when the valve is in its raisedposition, as illustrated in solid lines in Fig. 2, ports 3 and 6, Figs.1 and 4, are closed, while port 1 which leads to the pumping section ofthe first cylinder, is in communication with port 5 leading to thestorage tank, and port 2 which leads .to the pumping section of thesecond cylinder, is in communication with port 1- leading to thecarbureter. The valve is formed with a central. vertical partition 71,and upper and lower flanges a, as clearly shown in Figs. 5, 6 and 7, inorder to accomplish these results, as will be readily understood, thelength of the grooves n in the valve being just sufficient to cover orinclude two of the three ports in each column at the same time. Theresult of the construction just described is that in the raised positionof the valve, the upward movement of the enlarged head of one of thepistons in the pumping section of itscylinder will force the gas fromsaid pumping section into the storage tank via the port 1, one of thegrooves n and port 5, while the simultaneous downward movement of theenlarged head of the other piston in the pumping section of its cylinderwill draw gas into said pumping section from the carburetor via port 4,the other groove 01, of the valve, and port 2, the ports 3 and 6 beingclosed by the lower fiange n of the valve. In the lowered position ofthe valve, its upper flange n closes the ports 5 and 4, and the uppermovement of the enlarged head of the second piston in the pumpingsection of its cylinder will force the gas from said pumping sectioninto the storage tank via the port 2, second groove n in the valve, andport 6, while the simultaneous downward movement of the enlarged head ofthe first piston in the pumping section of its cylinder will draw inanother supply of gas from the carbureter into said pumping section viathe port 3, first groove n in the valve, and port 1. Thus gas or fuel isalways being drawn into the pumping section of one cylinder while thegas previously drawn into the pumping section of the other cylinder isbeing forced into the storage tank.

"The combustion section of each cylinder end of its working is providedwith an exhaust port P on a level with the top of the piston when thelatter is in its lowest position. The supply port or passage L in eachcylinder is arranged on a lower level than these exhaust ports. The mainpiston head in each cylinder is formed with a delivery passage R openingin the top thereof and also in the side adjacent the supply port L. Thisside opening of the passage R is adapted to regster with said supplyport L when the piston is in its lowest position, that is, at thestroke, as shown in Fig. The top opening of the passage R is arrangednear the point on the wall of the cylinder which is diametricallyopposite the exhaust port P, and said opening is shielded behind anupward projection or lug S on the top of the piston. The side of the lugadjacent the opening of the passage R is inclined upwardly and away fromthe exhaust port, whereas the side of said lug facing the exhaust portis inclined downwardly and toward the same. By reason of this peculiarformation of the top of the piston and arrangement of the deliverypassage therein, the charge on entering the cylinder is prevented frommixing with the exhaust gases which are guided to their exit by thesloping or inclined side of the lug 3 facing it. Moreover, the nozzleshape of the deliverv passage R forms a pocket or cup which holds therich mixture and carries it directly to the top of the cylinder which isprovided with a peaked projection a shaped to correspond to theformation of the top of the piston and has the spark plug T fitted inthe uppermost portion or peak directly over the lug S. Hence the richestpart of the combustible mixture is carried right into proximity to thespark plug where upon ignition it will develop the most power.

The combustion section of each cylinder is inclosed by a removable hoodor jacketwhich may be air cooled or water cooled as preferred. Asillustrated in Figs. 1 and 2, the hood U is adapted to be air cooled andis provided with volutes or fins V around its sides only. This hood ismade of aluminum or other metal suitable for radiating the heat. Thishood is open at the top and slides over the cast iron cylinder which istapered from bottom to top, thus insuring a perfect joint and alsoallowing the hood to be easily removed. The volutes V on the top of thecast iron cylinder are integral thereof, and are therefore notremovable. This hood is bolted to the top cylinder by bolts W, which maybe readily removed for taking oif the hood when occasion arises or whenthe water hood is to be substituted.

In Fig. 3 we have illustrated a form of water cooled hood or jacket U,made of similar material as hood U in Figs. 1 and 2,

of water.

v the single and removablv secured in place by bolts W. This hood isalso retained by the threaded bushing 22 in which the spark plug T isfitted. The walls of this hood are vertical and spaced a suitabledistance from the cast iron cylinder, allowing for a free circulationThe water also circulates around the volutes or fins on top of thecylinder.

It will be observed that the hoods, either for air or water coolingpurposes are interchangeable moments by simply loosening their securingmeans, and that these hoods are made of aluminum or other metal thatradiates heat to advantage. Furthermore, it will be noted that the upperor working pistons travel their entire length in the top sections of thecylinders while'the lower or pumping pistons travel their entire lengthin thelowel', sections of the cylinders, and that there are no joints ineither sections where leaks can occur. I

The engine may be operated with any description of gas which may beformed in an auxiliary attachment. Inasmuch as there are no puppetvalves,

slide valve being operated by an eccentric from thecrank shaft.Moreover, as the engine does not compress in the crank case, overheatingand leakage are avoided.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent of the United States is:

In an internal combustion engine, the combination with two cylinders,each having a pumping section and a combustion and can be transferred ina few v the engine is noiseless,

ports arranged in parallel rows and colleading to the umns, the twomiddle ports two of pumping sections of the cylinders,

' the other ports-leading to the storage'tank,

and the remainingtwo ports leadlng to a source of fuelsupply, one of theports leading to the fuel supply and one of theports leading to thestorage tank being arranged at either side of the middle row of portsleading to the pumping sections of the cylinders, and one of the portsleading to the storage tank beingarranged in each column, a valve havingtwo grooves each adapted to cover two of the three ports in each column,said valve also having flanges for closing the end ports in each columnwhen the other ports in the valve seat are covered by the grooves, andmeans for sliding said valve on the seat wherebythe-source of fuelsupply may be placed in communication with the pumping section of onecylinder while.

the pumping section of the other cylinder is placed in communicationwith the storage tank. v

In testimony whereof we have signed our names to this specification inthe presence of two attesting witnesses:

JOHN F. BUTLER.

HARRY F. MoORAY.

Witnesses:

GEORGE SPRINGMEYER, E. I. PARKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

. Washington, D. G.

